We have 2 hedgehog houses in our garden. Leave food out all year as they wake up during hibernation a few times and need something to eat. We've had them coming for years, and both houses are currently occupied.
We feed them kitten biscuits and poultry in jelly cat food. And obviously water. The food is in an upturned plastic container with a hole big enough for hedgies but not cats. Amazing how thin they can be when they stretch out.